Your irony detector needs adjustment. As pg wrote in his introduction to this letter,
"I sent the YC partners an email saying I was growing increasingly impressed with one of the startups in the current batch and asking what they thought of them, and Harj Taggar replied with this brilliant piece of VC boilerplate."
The joke is on the people who think that Taggar was expressing what he thinks, rather than what he has heard too many venture capitalists say when they aren't willing to say what they think.
"I sent the YC partners an email saying I was growing increasingly impressed with one of the startups in the current batch and asking what they thought of them, and Harj Taggar replied with this brilliant piece of VC boilerplate."
The joke is on the people who think that Taggar was expressing what he thinks, rather than what he has heard too many venture capitalists say when they aren't willing to say what they think.